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| author | Eric Dumazet <[email protected]> | 2024-03-28 14:40:32 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2024-03-29 22:03:11 +0000 |
| commit | 1abe267f173eae7ae76cf56232292e9641eb652f (patch) | |
| tree | b8f7952bdc3936448e9ee4da907745b2f9c1a7f8 /drivers/net/ethernet/intel/ice/ice_main.c | |
| parent | udp: avoid calling sock_def_readable() if possible (diff) | |
| download | kernel-1abe267f173eae7ae76cf56232292e9641eb652f.tar.gz kernel-1abe267f173eae7ae76cf56232292e9641eb652f.zip | |
net: add sk_wake_async_rcu() helper
While looking at UDP receive performance, I saw sk_wake_async()
was no longer inlined.
This matters at least on AMD Zen1-4 platforms (see SRSO)
This might be because rcu_read_lock() and rcu_read_unlock()
are no longer nops in recent kernels ?
Add sk_wake_async_rcu() variant, which must be called from
contexts already holding rcu lock.
As SOCK_FASYNC is deprecated in modern days, use unlikely()
to give a hint to the compiler.
sk_wake_async_rcu() is properly inlined from
__udp_enqueue_schedule_skb() and sock_def_readable().
Signed-off-by: Eric Dumazet <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_main.c')
0 files changed, 0 insertions, 0 deletions